Reducing Source-Active Message Flooding; Specifying The Rp Address Used In Sa Messages - Dell Force10 Z9000 Configuration Manual

CONFIGURATION mode
ip msdp peer
5. Advertise the network of each of the unique Loopback addresses throughout the network.
ROUTER OSPF mode
network

Reducing Source-Active Message Flooding

RPs flood source-active messages to all of their peers away from the RP.
When multiple RPs exist within a domain, the RPs forward received active source information back to the originating RP, which
violates the RFP rule. You can prevent this unnecessary flooding by creating a mesh-group. A mesh in this context is a topology in
which each RP in a set of RPs has a peership with all other RPs in the set. When an RP is a member of the mesh group, it forwards
active source information only to its peers outside of the group.
To create a mesh group, use the following command.
• Create a mesh group.
CONFIGURATION mode
ip msdp mesh-group

Specifying the RP Address Used in SA Messages

The default originator-id is the address of the RP that created the message. In the case of Anycast RP, there are multiple RPs all
with the same address.
To use the (unique) address of another interface as the originator-id, use the following command.
• Use the address of another interface as the originator-id instead of the RP address.
CONFIGURATION mode
ip msdp originator-id
Examples of R1, R2, and R3 Configuration for MSDP with Anycast RP
The following example shows an R1 configuration for MSDP with Anycast RP.
ip multicast-routing
!
interface TenGigabitEthernet 1/1
ip pim sparse-mode
ip address 10.11.3.1/24
no shutdown
!
interface TenGigabitEthernet 1/2
ip address 10.11.2.1/24
no shutdown
!
interface TenGigabitEthernet 1/21
ip pim sparse-mode
ip address 10.11.1.12/24
no shutdown
!
interface Loopback 0
ip pim sparse-mode
ip address 192.168.0.1/32
no shutdown
!
interface Loopback 1
ip address 192.168.0.11/32
no shutdown
!
router ospf 1
network 10.11.2.0/24 area 0
446
Multicast Source Discovery Protocol (MSDP)